| Name | Physcia major Nylander |
| Authorship | Nylander |
| Rank | Species |
| Placed in | Physcia (Schreber) Michaux |
| GUID | urn:lsid:indexfungorum.org:names:400722 |
| Citation | 1858 Flora 41: 379 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Physcia major Nylander |
| Identification made in | [no date] (4) |
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